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Boiling- i) It is a bulk phenomena.
ii) The substance changes it's state only at it's boiling point.
iii) It doesn't give a cooling effect.
Evaporation- i) It is a surface phenomena.
ii) The substance does not change only at it's boiling point.
iii) It gives a cooling effect.
EVAPORATION
- evaporation takes place silently
- it takes place at all temp.
- its a natural process
- it takes place only on surface
- rate of evaporation depends on area of free surface
BOILING
- its associated with characteristic sound
- its takes place at all temp.
- to be heated for boiling
- at constant temp. boiling takes place
- boiling takes place at all regions of liquid
- it does not depend on free surface
Wiki User
∙ 7y ago
Wiki User
∙ 9y agoSome key points are
1) Evaporation takes internal energy while for boiling we have to provide external energy or we have to reduce the pressure.
2) As Evaporation takes internal energy therefore evaporation results in cooling while this is not observed in boiling.
3) Evaporation occurs below saturated temperature while Boiling occurs at and above saturated temperature.
4) Evaporation occurs at liquid-vapor interface while Boiling occurs at solid liquid interface.
5) Vapor bubbles are formed in Boiling while in Evaporation there are no bubble formation and no bubble motion.
6) There are different regimes of boiling (like nucleate boiling, transition boiling, film boiling etc.) while these regimes are not present in Evaporation.
7) Rate of Evaporation is much slower than the Boiling.
8) Example of Evaporation are
Water in a lake at 20°C, evaporates to air at 20°C and 60 percent relative humidity since the saturation pressure of water at 20°C is 2.34 kPa, and the vapor pressure of air at 20°C and 60 percent relative humidity is 1.4 kPa. Other examples of evaporation are the drying of clothes, fruits, and vegetables; the evaporation of sweat to cool the human body; and the rejection of waste heat in wet cooling towers.
i am hoping that the above comparison will give you the clear picture about the evaporation and boiling.
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What is the different between vaporization evaporation and boiling?
The difference between them is that boiling is when you heat a liguid and it turns into a gas, vaporization is when a liquid changes into a gas and evaporation occurs at the surface of a liquid beneath its boiling point.
Boiling and evaporation are both forms of what?
Boiling and evaporation are both forms of changing liquids into gas. Boiling occurs when the liquid reaches its boiling point, while evaporation can occur at any temperature.
What is the difference between the process of boiling and evaporation of water?
Boiling is a greatly expedited form of evaporation. When you heat something to its boiling point, it has enough energy for its molecules to rapidly escape. Evaporation is a much slower action, generally. It is just molecules at the surface gaining enough energy to escape. Both evaporation and boiling are endothermic processes. They will cool what ever the molecules are escaping from.
How is the boiling of liquid related to the evaporation process?
Evaporation is partial boiling. When a liquid reaches its boiling point, no molecules of water will stay liquid and evaporation is at 100%.
What is vaporization at the surface of a liquid that is not boiling?
Evaporation
List 2 similarities and 2 differences between the processes of boiling and evaporation?
sexy
Give two differences between evaporation and boiling?
Evaporation takes place at all temperatures but boiling at one particular temperature When saturated vapour pressure becomes equal to the atmospheric pressure boiling takes place but evaporation is not so
What is the three differences between evaporation and boiling?
Boiling occurs when the vapour pressure becomes equal to the external pressure while evaporation is the escape of molecules from the surface. Bubbles appear in boiling while not in evaporation. Temperature does not effect the rate of boiling while evaporation is fast at high temperature and slow at low temperature.
Differences between evaporation and distillation?
evaporation: change of state from and liquid to gas. distillation: method of separating a solution to its own components that involves boiling and condensation
Compare and contrast between boiling and evaporation?
Evaporation takes place at any temperature but boiling takes place only at a substance's boiling point.
What is the difference between the processes evaporation and boiling in pure water?
Evaporation is completely natural. Boiling isn't. Hopefully this helps.
What is the different between vaporization evaporation and boiling?
The difference between them is that boiling is when you heat a liguid and it turns into a gas, vaporization is when a liquid changes into a gas and evaporation occurs at the surface of a liquid beneath its boiling point.
Is boiling a form of evaporation or is evaporation a form of boiling?
Evaporation is one of the 3 types of boiling.
Boiling and evaporation are both forms of what?
Boiling and evaporation are both forms of changing liquids into gas. Boiling occurs when the liquid reaches its boiling point, while evaporation can occur at any temperature.
What is the difference between the process of boiling and evaporation of water?
Boiling is a greatly expedited form of evaporation. When you heat something to its boiling point, it has enough energy for its molecules to rapidly escape. Evaporation is a much slower action, generally. It is just molecules at the surface gaining enough energy to escape. Both evaporation and boiling are endothermic processes. They will cool what ever the molecules are escaping from.
How is the boiling of liquid related to the evaporation process?
Evaporation is partial boiling. When a liquid reaches its boiling point, no molecules of water will stay liquid and evaporation is at 100%.
What is it when a gas change to a liquid?
It can be called either boiling or evaporation.
